<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			li:first-child{
				font-size:  30px ;
			}
			
			li:first-of-type{
				
			}
			
			li:nth-child(2){
				font: bold 40px "微软雅黑";
			}
			
			ul>li{
				color: blue;
			}
			
			
		</style>
	</head>
	<body>
		<ul>
			<li>我的</li>
			<li>你的</li>
			<li>他的</li>
		</ul>
	</body>
</html>
